How To But A Floor In A Aluminum Boat Has Anyone Used Snow Roof Inside A Riveted Aluminum Boat To Prevent Leaks?

Has anyone used snow roof inside a riveted aluminum boat to prevent leaks? - how to but a floor in a aluminum boat

I have a 17 "smoke art aluminum boat lost rivets rivets rivets replaced I expressed doubt, and I think to put a layer of snow before the reinstall in the new seats and floors, since it is much cheaper than if we Rino lined What do you think ...